Visual basic program conversion value

This time I will try to give a little explanation to make a conversion program value.
just, make a design look like this

After the design is complete, let's start with the coding in the button "OK"
type coding as shown in the picture

Coding is completed, the "exit" button type coding :
unload me

For coding "cancel" :
Text1.Text = ""
Text2.Text = ""
Text1.SetFocus


Last step to run the program, the program will look like this

For the lazy writing I include examples of program coding:)
pass: ndrebekool
conversion value